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Real-Time Satellite Imagery,
Built for Weather Enthusiasts

Professional-grade GOES satellite imagery with radar, lightning, model data, and severe weather overlays — updated continuously and accessible from any browser.

What Is This?

Satellite Weather gives you direct access to imagery from NOAA's GOES-19 (East) and GOES-18 (West) geostationary satellites. The system downloads raw satellite data from AWS, processes all 16 ABI spectral channels, generates scientifically-accurate RGB composites, and layers on real-time weather data — all automatically, around the clock.

This is the same data meteorologists use for forecasting, storm chasing preparation, and situational awareness. No accounts, no ads, no compromises on resolution.

Features

S

Satellite Imagery

All 16 ABI channels from GOES-East and GOES-West, plus 15 RGB composite products including GeoColor, Airmass, Dust, Sandwich, Fire Temperature, Cloud Microphysics, and more. Covers CONUS, Full Disk, and both Mesoscale sectors.

W

Severe Weather Overlays

NWS tornado/severe thunderstorm/flood warnings, SPC convective outlooks and mesoscale discussions, WPC excessive rainfall outlooks and MPDs, ProbSevere storm probabilities — all rendered directly on the satellite imagery.

R

Radar & Lightning

MRMS multi-radar composite reflectivity, rotation tracks, hail indicators (MESH), flash flood products, and precipitation estimates. GLM lightning flash density, flash points, and optical energy from the satellite's own lightning mapper.

M

Model & Surface Data

RTMA surface analysis (temperature, dewpoint, pressure, winds). RAP model upper-air data at 925, 850, 700, 500, and 300 mb. METAR station plots with wind barbs and standard meteorological symbology.

Interactive Tools

D

Drawing & Annotation

Draw cold fronts, warm fronts, stationary fronts, drylines, and freehand annotations directly on the imagery. Add text labels for analysis. Six color swatches for categorized annotations.

M

Distance Measurement

Click two points on the image to measure approximate distance in kilometers, miles, and nautical miles. Uses domain-aware scaling for accuracy.

Q

Multi-Pane Comparison

Dual-pane or quad-pane modes let you compare up to 4 different products simultaneously — e.g. GeoColor + Airmass + Split Window + Radar overlay for complete storm-scale analysis.

T

Time Series Charts

Track up to 4 metrics over the animation timeline — coldest cloud-top brightness temperature, mean BT, max reflectance, or cloud coverage percentage. Perfect for monitoring convective trends.

Coverage

Imagery is generated for over 100 geographic regions, ranging from full-hemisphere views down to individual-state crops. Here's a summary of what's available:

Domains

DomainResolutionUpdate Cadence
CONUS5424 × 5424 nativeEvery 5 minutes
Full Disk10848 × 10848 nativeEvery 10 minutes
Mesoscale 1 & 22000 × 2000 nativeEvery 1 minute

Regional Crops

Regions include the full CONUS, large sub-regions (West, Central, East), medium areas (Northwest, Great Lakes, Southeast, etc.), individual states, offshore zones (Atlantic, Caribbean, Gulf of America, East Pacific), Alaska, Hawaii, Canadian provinces, South American regions, and full-hemisphere projections.

RGB Products

Each product is generated from specific combinations of the 16 ABI spectral channels and, in some cases, external data like nightlights and land masks.

ProductPrimary Use
GeoColorNatural-looking day/night imagery. Visible by day, IR with city lights by night.
AirmassJet streams, frontal boundaries, upper-level troughs/ridges.
SandwichIR cloud-top temps with visible texture baked in. Excellent for convection.
Split WindowMoisture and cloud-top height via 10.3/12.3 µm difference.
DustDust and volcanic aerosol detection over land and ocean.
Fire TemperatureActive fire detection using shortwave IR channels.
Cloud MicrophysicsIce vs. water cloud phase, particle size, and optical depth.
Day Land Cloud FireNatural color with enhanced fire detection (daytime only).
Snow/Fog24-hour fog and low stratus detection; daytime snow/fog discrimination.
True ColorSimple visible-band RGB approximation.
Day Cloud PhaseCloud thermodynamic phase (liquid, ice, mixed) — daytime only.
Volcanic AshVolcanic ash cloud detection and tracking.
Night MicrophysicsNighttime fog, low clouds, and cloud-top microphysics.
Water VaporUpper-tropospheric moisture at 6.2 µm.
Differential WV6.2 vs. 7.3 µm WV difference — highlights jet streaks and dry intrusions.

Overlay Data Sources

OverlaySourceProducts
GLM Lightning GOES Geostationary Lightning Mapper via AWS Flash density, flash points, optical energy, flash area
NWS Warnings NWS via Iowa Environmental Mesonet Tornado warnings, severe thunderstorm warnings, flash flood warnings
MRMS Radar NOAA Multi-Radar Multi-Sensor via AWS Composite reflectivity, rotation tracks, MESH hail, flash flood, QPE, echo tops, precipitation
SPC Products Storm Prediction Center Day 1–8 convective outlooks (categorical + probabilistic tornado/wind/hail), mesoscale discussions
WPC Products Weather Prediction Center Excessive rainfall outlook (Day 1–3), mesoscale precipitation discussions
METAR Plots Aviation Weather Center Surface observations with wind barbs, temperature, dewpoint, pressure, sky cover
RTMA NOAA Real-Time Mesoscale Analysis via AWS 2m temperature, 2m dewpoint, surface pressure, 10m wind barbs (CONUS, Alaska, Hawaii grids)
RAP Model Rapid Refresh via AWS Temperature, geopotential height, relative humidity, wind barbs, omega, CAPE, CIN, precipitable water — at 925, 850, 700, 500, 300 mb

Keyboard Shortcuts

KeyAction
SpacePlay / Pause animation
Left / RightPrevious / Next frame
DToggle drawing mode
IToggle pixel inspector
MToggle distance measurement tool
KToggle rock (ping-pong) mode
TToggle time series chart
PToggle dual-pane comparison
QToggle quad-pane comparison
SShare / screenshot menu
LLocate me (geolocation)
RReset zoom
FToggle fullscreen
CToggle IR colorbar / scale
1–8Quick-select RGB product
EscapeClose any active mode

How It Works

The backend runs on a Linux server that continuously downloads raw GOES ABI Level 1b data from NOAA's public AWS buckets. Each processing cycle:

  1. Downloads all 16 spectral channels for the target satellite and domain.
  2. Calibrates radiances, computes brightness temperatures and reflectances.
  3. Generates RGB composites using Numba-accelerated pixel-level algorithms (geocolor blending, day/night transitions, etc.).
  4. Projects imagery onto regional grids using a master-projection system — one large projection per domain, with fast pixel-coordinate extraction for 100+ regions.
  5. Downloads and rasterizes overlay data (radar, lightning, warnings, model fields) onto matching grids.
  6. Writes final PNG/WebP images with timestamps and boundary lines.

The web viewer loads these pre-rendered images. No heavy processing happens in your browser — it's fast on any device.

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